datetime format as a constant to allow re-use
datetime format as a constant to allow re-use

makinacorpus/formhub,qlands/onadata,wesley1001/formhub,sounay/flaminggo-test,kobotoolbox/kobocat,SEL-Columbia/formhub,piqoni/onadata,spatialdev/onadata,mainakibui/kobocat,hnjamba/onaclone,GeoODK/formhub,SEL-Columbia/formhub,GeoODK/onadata,eHealthAfrica/formhub,GeoODK/onadata,spatialdev/onadata,smn/onadata,mainakibui/kobocat,eHealthAfrica/onadata,jomolinare/kobocat,smn/onadata,SEL-Columbia/formhub,wesley1001/formhub,jomolinare/kobocat,sounay/flaminggo-test,ehealthafrica-ci/onadata,ehealthafrica-ci/formhub,spatialdev/onadata,awemulya/fieldsight-kobocat,GeoODK/formhub,awemulya/fieldsight-kobocat,jomolinare/kobocat,makinacorpus/formhub,qlands/onadata,awemulya/fieldsight-kobocat,kobotoolbox/kobocat,ehealthafrica-ci/formhub,smn/onadata,hnjamba/onaclone,smn/onadata,kobotoolbox/kobocat,ehealthafrica-ci/onadata,mainakibui/kobocat,ehealthafrica-ci/onadata,ehealthafrica-ci/formhub,mainakibui/kobocat,eHealthAfrica/onadata,GeoODK/onadata,piqoni/onadata,piqoni/onadata,GeoODK/onadata,sounay/flaminggo-test,qlands/onadata,wesley1001/formhub,eHealthAfrica/onadata,makinacorpus/formhub,ehealthafrica-ci/onadata,piqoni/onadata,wesley1001/formhub,ultimateprogramer/formhub,makinacorpus/formhub,sounay/flaminggo-test,spatialdev/onadata,ultimateprogramer/formhub,ehealthafrica-ci/formhub,hnjamba/onaclone,qlands/onadata,hnjamba/onaclone,kobotoolbox/kobocat,eHealthAfrica/formhub,SEL-Columbia/formhub,eHealthAfrica/formhub,ultimateprogramer/formhub,eHealthAfrica/formhub,awemulya/fieldsight-kobocat,GeoODK/formhub,jomolinare/kobocat,ultimateprogramer/formhub